UPSC CSE Prelims

Correct Option: B (Some use imported uranium and others use domestic supplies) Explanation: Under India’s civil–military separation plan, designated civilian reactors using imported nuclear fuel are placed under IAEA safeguards, while other strategic facilities are outside that arrangement. Option-wise Analysis: A. Incorrect - The distinction is not simply uranium versus thorium fuel. B. Correct - the exam contrasts safeguarded civilian imported-fuel facilities with non-safeguarded domestic/strategic facilities. C. Incorrect - Indian nuclear reactors are not distinguished by whether a foreign company operates them. D. Incorrect - Indian power reactors are predominantly state-operated; ownership is not the safeguarding criterion. Review note: Safeguards apply by designated facility and international agreement, not exclusively by the country of origin of each fuel consignment.